ES2392523A1 - System for joining component portions of wind turbine blades - Google Patents
System for joining component portions of wind turbine blades Download PDFInfo
- Publication number
- ES2392523A1 ES2392523A1 ES201100527A ES201100527A ES2392523A1 ES 2392523 A1 ES2392523 A1 ES 2392523A1 ES 201100527 A ES201100527 A ES 201100527A ES 201100527 A ES201100527 A ES 201100527A ES 2392523 A1 ES2392523 A1 ES 2392523A1
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- ES
- Spain
- Prior art keywords
- sections
- screws
- bolts
- wind turbine
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005304 joining Methods 0.000 title claims description 17
- 238000005192 partition Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 241001474977 Palla Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/0004—Joining sheets, plates or panels in abutting relationship
- F16B5/0084—Joining sheets, plates or panels in abutting relationship characterised by particular locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
SISTEMA DE UNIÓN DE TRAMOS COMPONENTES DE PALAS DE AEROGENERADOR SYSTEM OF UNION OF COMPONENT SECTIONS OF AEROGENERATOR BLADES
Sector de la técnica Technical sector
La presente invención está relacionada con las palas de aerogenerador que se realizan en tramos para facilitar el transporte, proponiendo un sistema que permite determinar la unión de los tramos componentes The present invention is related to wind turbine blades that are made in sections to facilitate transport, proposing a system that allows to determine the union of the component sections
10 de las palas de una manera ventajosa. 10 of the blades in an advantageous manner.
Estado de la técnica State of the art
La evolución de los aerogeneradores a The evolution of wind turbines to
15 realizaciones cada vez de mayores potencias, ha conllevado que las palas de los mismos adquieran longitudes muy considerables, resultando muy complicado el transporte de las mismas. 15 realizations of greater powers, has led to the shovels of them acquire very considerable lengths, resulting in very complicated transport of them.
20 Para solucionar ese problema es convencional ya la realización de dichas palas en tramos parciales, los cuales se transportan separados hasta el lugar de montaje de los aerogeneradores, en donde los tramos se unen para formar las palas que se montan en los mismos. 20 To solve this problem, it is conventional and the realization of said blades in partial sections, which are transported separately to the place of assembly of the wind turbines, where the sections are joined to form the blades that are mounted therein.
25 En la actualidad existen dos tecnologías básicas para la unión de los tramos componentes de las palas de aerogenerador, basándose una de dichas tecnologías en uniones por pegado, en tanto que la otra tecnología se 25 There are currently two basic technologies for joining the component sections of the wind turbine blades, one of these technologies being based on bonding joints, while the other technology is
30 basa en uniones mecánicas. 30 based on mechanical joints.
Las uniones por pegado requieren establecer en el lugar de montaje de los aerogeneradores instalaciones con condiciones controladas de humedad, temperatura Bonding joints require the installation of controlled conditions of humidity, temperature at the installation site of the wind turbines
35 etc., como las de las plantas de fabricación, y 35 etc., such as those of manufacturing plants, and
trasladar hasta dichas instalaciones la maquinaria y los utillajes necesarios para realizar el pegado de unión entre los tramos componentes de las palas, resultando muy complicada la obtención de uniones eficaces y fiables, mediante esta tecnología. transfer the necessary machinery and tools to these installations to perform the bonding between the component sections of the blades, making it very difficult to obtain efficient and reliable joints, using this technology.
Las uniones mecánicas se basan en la utilización Mechanical joints are based on the use
- de from
- pernos o tornillos que se acoplan por roscado a bolts or screws that be dock by screwed to
- elementos elements
- a modo de tuercas fijados en el material de to mode from nuts set in he material from
- formación training
- de los tramos de las palas o dispuestos en from the sections from the Pallas or willing in
- huecos gaps
- de dicho material. from said material.
Un tipo de unión mecánica de tramos de pala, en ese sentido, consiste en una unión directa entre los tramos a unir, mediante pernos o tornillos que se acoplan a rosca por un extremo respecto de bulones metálicos incluidos en el material compuesto de uno de los tramos, pasando dichos pernos o tornillos por orificios longitudinales enfrentados de los tramos a unir, hasta un hueco definido en el otro tramo, en donde por el otro extremo de los pernos se incorpora una tuerca o elemento a modo de tuerca de aprieto. Soluciones de este tipo son, por ejemplo, las de los documentos W02010081921, W02007131937, US2010143148 y ES8503080. A type of mechanical connection of spade sections, in that sense, consists of a direct connection between the sections to be joined, by means of bolts or screws that are screwed at one end with respect to metal bolts included in the composite material of one of the sections, passing said bolts or screws through longitudinal holes facing the sections to be joined, to a gap defined in the other section, where at the other end of the bolts a nut or element is incorporated as a tightening nut. Solutions of this type are, for example, those of documents W02010081921, W02007131937, US2010143148 and ES8503080.
Otro tipo de unión mecánica entre tramos de pala, consiste en disponer una o varias piezas intermedias entre los tramos a unir, fijándose dichas piezas con pernos roscados sobre cada uno de los tramos que se unen. Una solución de este tipo es, por ejemplo, la del documento W02006056584. Another type of mechanical connection between spade sections consists in arranging one or several intermediate pieces between the sections to be joined, said pieces being fixed with threaded bolts on each of the sections that are joined. Such a solution is, for example, that of document W02006056584.
Otro tipo de unión mecánica entre tramos de pala, consiste en disponer respectivas piezas metálicas
Another type of mechanical connection between spade sections consists of arranging respective metal parts.
fij actas mediante diversos métodos sobre los extremos correspondientes de los tramos a unir, estableciéndose luego una sujeción por atornillado entre las dos piezas fixed by various methods on the corresponding ends of the sections to be joined, then establishing a fastening by screwing between the two pieces
- fijadas set
- a los tramos que se unen. Soluciones de este to the sections that be unite Solutions from East
- tipo kind
- son, por ejemplo, las de los documentos They are, by example, the from the documents
- W02006103307, W02006103307,
- W02011006800, ES2178903, ES2337645, W02011006800, ES2178903, ES2337645,
- EP2138715 EP2138715
- y JP2004011616. Y JP2004011616.
En cualquiera de estas soluciones la concentración de la distribución de pernos o tornillos de sujeción entre los tramos de pala a unir está limitada por motivos geométricos y estructurales de modo que ante altas solicitaciones de cargas se generan elevadas concentraciones de esfuerzos en cada una de las piezas de unión, con lo que el riesgo de rotura es elevado. In any of these solutions, the concentration of the distribution of bolts or fastening screws between the sections of the blade to be joined is limited by geometric and structural reasons so that high stress concentrations are generated in each of the pieces when loading loads of union, with which the risk of breakage is high.
Objeto de la invención Object of the invention
De acuerdo con la presente invención se propone un sistema de unión mecánica entre tramos de palas de aerogenerador, con unas características estructurales particulares que hacen la unión ventajosa respecto de las soluciones conocidas del estado de la técnica. In accordance with the present invention, a mechanical bonding system between sections of wind turbine blades is proposed, with particular structural characteristics that make the connection advantageous with respect to the known solutions of the prior art.
Este sistema de unión objeto de la invención consta de una o varias piezas intermedias que se disponen entre los tramos de pala a unir, los cuales se unen a dichas piezas intermedias mediante pernos o tornillos que pasan por orificios longitudinales de las mencionadas piezas intermedias, estableciendo acoplamiento roscado respecto de piezas de anclaje a modo de tuercas aloj actas dentro del material de los tramos de pala, presentando las piezas intermedias una estructura compleja formada por aberturas y columnas que determina sendos tabiques transversales extremos,
This joint system object of the invention consists of one or several intermediate pieces that are arranged between the sections of the blade to be joined, which are joined to said intermediate pieces by means of bolts or screws that pass through longitudinal holes of said intermediate pieces, establishing threaded coupling with respect to anchoring pieces as nuts housed inside the material of the spade sections, the intermediate pieces presenting a complex structure formed by openings and columns that determines both extreme transverse partitions,
que se apoyan sobre las piezas de anclaje y un tabique transversal medio, a través de los cuales pasan unos pernos o tornillos largos que pasan por el interior de las columnas desde el tabique transversal medio y unos pernos o tornillos cortos que pasan únicamente a través de los tabiques transversales extremos, hasta las piezas de anclaje de los tramos de pala a unir. which rest on the anchoring pieces and a middle transverse septum, through which long bolts or screws pass through the interior of the columns from the middle transverse septum and short bolts or screws that pass only through the extreme transverse partitions, to the anchoring parts of the spade sections to be joined.
Se obtiene de este modo un sistema en el que los pernos o tornillos de unión establecen sobre la pieza o piezas intermedias una línea de presión en el borde y otra línea de presión en la zona media, en relación con cada uno de los tramos de pala a unir, generándose en la pieza o piezas intermedias un estado de compresión predominante que permite reducir las solicitaciones que deben resistir. A system is thus obtained in which the connecting bolts or screws establish on the part or intermediate pieces a pressure line at the edge and another pressure line in the middle zone, in relation to each of the blade sections to join, generating in the piece or intermediate pieces a predominant compression state that allows to reduce the stresses that must resist.
Los acoplamientos roscados de los pernos o tornillos de unión de la pieza o piezas intermedias con Threaded couplings of bolts or screws connecting the part or intermediate parts with
- los the
- tramos de pala, sobre las piezas de anclaje sections from shovel, on the pieces from anchorage
- alojadas housed
- en el material de los tramos de pala, se in he material from the sections from shovel, be
- prevén foresee
- además alternativamente de dos longitudes also alternatively from two lengths
- diferentes, different,
- con lo cual se consigue también un reparto with the which be get too a distribution
de los esfuerzos de sujeción sobre los tramos de pala que permite uniones resistentes con esfuerzos localizados reducidos. of the clamping forces on the spade sections that allows resistant joints with reduced localized stresses.
Con todo ello el sistema preconizado presenta las ventajas siguientes: With all this, the recommended system has the following advantages:
-Gracias a la arquitectura compleja de la pieza o piezas intermedias de la unión, es posible disponer gran cantidad de pernos o tornillos en una zona reducida de los tramos de pala, permitiendo conseguir una gran densidad de carga (fuerza soportada por unidad
-Thanks to the complex architecture of the piece or intermediate parts of the union, it is possible to arrange a large number of bolts or screws in a small area of the blade sections, allowing to achieve a high load density (force supported per unit
de longitud) que proporciona uniones ligeras y muy resistentes. in length) that provides light and very resistant joints.
- --
- Gracias a la arquitectura compleja de la pieza o piezas intermedias de la unión, es posible disponer gran cantidad de piezas de anclaje dentro del material de los tramos de pala. La interfase de dichas piezas de anclaje con el material de los tramos de pala supone un punto crítico de la unión. Gracias al alto número de interfases, las solicitaciones soportadas son muy altas o, en el caso de que las solicitaciones no sean Thanks to the complex architecture of the piece or intermediate parts of the joint, it is possible to arrange a large number of anchor pieces within the material of the blade sections. The interface of said anchoring pieces with the material of the blade sections is a critical point of the joint. Thanks to the high number of interfaces, the supported requests are very high or, in case the requests are not
- excesivas, excessive
- permite emplear piezas de anclaje de It allows use pieces from anchorage from
- dimensiones dimensions
- reducidas, lo cual posibilita la elección reduced, the which makes possible the choice
- de from
- sistemas de producción sencillos e implica systems from production simple and it implies
reducciones de peso en dichas piezas de anclaje y en el material alrededor de ellas. weight reductions in said anchor pieces and in the material around them.
- --
- Las tensiones que afectan a la pieza o piezas intermedias, gracias a su arquitectura constructiva, son menores que en otros sistemas de unión, para una misma carga externa actuante. The tensions that affect the piece or intermediate pieces, thanks to its constructive architecture, are lower than in other joining systems, for the same external acting load.
- --
- El sistema de unión permite la integración en diversos modelos de palas con diferentes arquitecturas internas (como mono y bi larguero, viga cajón, etc.), sin producir mayor impacto en el diseño global de la pala. The joining system allows the integration in different models of blades with different internal architectures (such as mono and bi stringer, drawer beam, etc.), without producing greater impact on the overall design of the blade.
-El montaje de la unión es posible desde el exterior de la pala que se compone con los tramos que se unen, pudiendo actuarse sobre los pernos o tornillos de la unión con los útiles necesarios por las aberturas de la pieza o piezas intermedias, sin necesidad de tolerancias de montaje muy restrictivas. -The assembly of the union is possible from the outside of the blade that is composed with the sections that join, being able to act on the bolts or screws of the union with the necessary tools for the openings of the piece or intermediate pieces, without need of very restrictive mounting tolerances.
- --
- Mediante la utilización de varias piezas intermedias de unión, discretas y de tamaño reducido, se facilita su fabricación, su proceso de montaje y su adaptabilidad a curvaturas de diferentes palas. By means of the use of several intermediate pieces of union, discrete and of reduced size, its manufacturing, its assembly process and its adaptability to curvatures of different blades are facilitated.
- --
- se produce una concentración reducida de tensiones en el material de los tramos de pala alrededor de las piezas de anclaje de los pernos o tornillos de la unión. a reduced concentration of stresses occurs in the material of the spade sections around the anchoring parts of the bolts or screws of the joint.
- --
- La línea neutra de la pieza o piezas intermedias queda perfectamente alineada con el eje de los pernos o tornillos, quedando éstos a su vez alineados con la línea neutra de la pared de los tramos de pala que se unen, con lo cual no se generan momentos flectores secundarios en la unión, lo que determina una unión estructuralmente muy efectiva. The neutral line of the part or intermediate parts is perfectly aligned with the axis of the bolts or screws, these being in turn aligned with the neutral line of the wall of the spade sections that join, which does not generate moments secondary flectors in the union, which determines a structurally very effective union.
- --
- El sistema de unión, que estará cubierto con un carenado aerodinámico, no sobresale de la superficie aerodinámica de la pala que se forma, por lo que no se ve afectada la producción energética de la pala. The joining system, which will be covered with an aerodynamic fairing, does not protrude from the aerodynamic surface of the blade that is formed, so that the energy production of the blade is not affected.
Por lo tanto, el sistema preconizado resulta de unas características muy ventajosas para la función a Therefore, the recommended system results from very advantageous features for the function to
- la the
- que está destinado, adquiriendo vida propia y that is destined, acquiring lifetime own Y
- carácter character
- preferente respecto de los sistemas que se preferential respect from the systems that be
- conocen they know
- de la misma aplicación. from the same application.
Descripción de las figuras Description of the figures
La figura 1 muestra un detalle de unión entre dos tramos de pala según el sistema de la invención, con una pieza intermedia única. Figure 1 shows a connection detail between two spade sections according to the system of the invention, with a single intermediate piece.
La figura 2 es un detalle como el de la figura anterior, incluyendo la unión de dos piezas intermedias complementarias en el sentido longitudinal de la unión. Figure 2 is a detail like that of the previous figure, including the joining of two complementary intermediate pieces in the longitudinal direction of the joint.
La figura 3 es un detalle semejante a los Figure 3 is a detail similar to
- anteriores, previous
- incluyendo la unión de varias piezas including the Union from several pieces
- intermedias intermediate
- complementarias en el sentido transversal complementary in he sense cross
- de from
- la unión, comprendiendo cada una de ellas dos the Union, understanding every a from they two
- aberturas, openings,
- dos pernos o tornillos cortos y otros dos two bolts or screws short Y others two
- largos. long
La figura 4 es un detalle como el anterior, con las piezas intermedias complementarias en el sentido transversal de la unión, comprendiendo alternativamente cada una de ellas tres aberturas, tres pernos o tornillos cortos y otros tres largos. Figure 4 is a detail like the previous one, with the complementary intermediate parts in the transverse direction of the joint, each of them comprising three openings, three short bolts or screws and another three long ones.
La figura 5 es un detalle semejante al de la figura 1, con los pernos o tornillos de unión de las piezas intermedias respecto de los tramos de pala entrando con una distribución de dos longitudes diferentes en los tramos de pala. Figure 5 is a detail similar to that of Figure 1, with the connecting bolts or screws of the intermediate parts with respect to the blade sections entering with a distribution of two different lengths in the blade sections.
La figura 6 es un detalle semejante al de la figura 1, con la pieza intermedia formada con aberturas ciegas en una de las caras de la pieza. Figure 6 is a detail similar to that of Figure 1, with the intermediate piece formed with blind openings on one of the faces of the piece.
La figura 7 es un detalle del extremo de un tramo de pala, observándose la posición del sistema de unión en unas zonas parciales del contorno del perfil del tramo, que se corresponden con las zonas de mayor transmisión de carga. Figure 7 is a detail of the end of a section of blade, observing the position of the joint system in partial areas of the contour of the profile of the section, which correspond to the areas of greatest load transmission.
Descripción detallada de la invención Detailed description of the invention
El objeto de la invención se refiere a un sistema de unión de tramos (1) componentes de palas de aerogenerador, con una realización que aporta características constructivas y funcionales ventajosas para esa función. The object of the invention relates to a system for joining sections (1) components of wind turbine blades, with an embodiment that provides advantageous constructive and functional characteristics for that function.
El sistema preconizado consta de una o varias piezas intermedias (2), que se disponen entre los The recommended system consists of one or several intermediate pieces (2), which are arranged between the
- tramos sections
- (1) de pala a unir, fijándose dichas piezas (one) from shovel to link, noticing sayings pieces
- intermedias intermediate
- (2) respecto de los frentes extremos de los (2) respect from the fronts extremes from the
- tramos sections
- ( 1) de pala sobre piezas de anclaje (4), ( one) from shovel on pieces from anchorage (4),
- mediante through
- pernos o tornillos (3) que pasan por orificios bolts or screws (3) that pass by holes
longitudinales de las mencionadas piezas intermedias of the aforementioned intermediate pieces
(2) y se acoplan a rosca respecto de las piezas de anclaje (4) a modo de tuercas que se hallan alojadas en los tramos (1) de pala. (2) and they are screwed together with respect to the anchoring pieces (4) as nuts that are housed in the spade sections (1).
Las piezas intermedias (2) que se disponen entre los tramos ( 1) de pala a unir se hallan formadas por una estructura compleja que determina unos tabiques transversales extremos (2. 1) y un tabique transversal medio (2.2), entre los cuales se extienden una serie de columnas (2.3) separadas por aberturas (2.4). The intermediate pieces (2) that are arranged between the sections (1) of the blade to be joined are formed by a complex structure that determines extreme transverse partitions (2.1) and a middle transverse partition (2.2), among which They extend a series of columns (2.3) separated by openings (2.4).
En dichas piezas intermedias (2) los pernos o tornillos (3) de fijación sobre los tramos (1) de pala pasan a través de los tabiques transversales extremos In said intermediate parts (2) the bolts or screws (3) of fixation on the sections (1) of the blade pass through the end transverse partitions
- ((
- 2. 1) y del tabique transversal medio (2. 2) , pasando unos pernos o tornillos (3) cortos desde las aberturas 2. 1) and the middle transverse septum (2.2), passing short bolts or screws (3) from the openings
- ((
- 2. 4) directamente a través de los tabiques transversales extremos (2.1), en tanto que otros pernos 2. 4) directly through the extreme transverse partitions (2.1), while other bolts
o tornillos (3) largos pasan a través del tabique transversal medio (2.2) y desde éste por el interior de las columnas (2.3) hasta atravesar al tabique transversal extremo (2.1) que corresponda.
or long screws (3) pass through the middle transverse septum (2.2) and from it through the interior of the columns (2.3) to cross the corresponding extreme transverse septum (2.1).
De este modo se logra una distribución de la sujeción que permite disponer un gran número de pernos In this way a distribution of the support is achieved that allows a large number of bolts to be arranged
o tornillos (3) , con un reparto de los esfuerzos de apoyo sobre los tabiques transversales extremos (2.1) y sobre el tabique transversal medio (2. 2) , generándose or screws (3), with a distribution of the support efforts on the extreme transverse partitions (2.1) and on the middle transverse septum (2.2), being generated
- en in
- la pieza o piezas intermedias (2) un estado de the piece or pieces intermediate (2) a state from
- compresión compression
- predominante que permite reducir las predominant that It allows reduce the
- solicitaciones solicitations
- que deben resistir, obteniéndose una that must to resist, getting a
- unión muy union very
- resistente. resistant.
Por otro lado, los acoplamientos roscados de los pernos o tornillos (3) sobre las piezas de anclaje (4) alojadas en el material de los tramos (1) de pala, se prevén de dos longitudes alternativamente diferentes, por ejemplo los que pasan directamente a través de los tabiques transversales extremos (2.1), en mayor profundidad, y el de los otros pernos o tornillos (3), en este caso los que pasan por el interior de las columnas (2.3), en menor profundidad, en los tramos (1) de pala, como se observa en la figura 5, con lo cual se logra también un reparto de los esfuerzos de sujeción sobre los tramos (1) de pala, que hace que los esfuerzos localizados en los mismos sean a su vez reducidos. La distribución indicada no es limitativa, ya que de igual modo pueden ser los pernos o tornillos On the other hand, the threaded couplings of the bolts or screws (3) on the anchoring pieces (4) housed in the material of the blade sections (1), are provided with two alternately different lengths, for example those that pass directly through the extreme transverse partitions (2.1), in greater depth, and that of the other bolts or screws (3), in this case those that pass through the interior of the columns (2.3), in less depth, in the sections (1) blade, as seen in Figure 5, which also achieves a distribution of the clamping forces on the sections (1) of blade, which makes the efforts located therein in turn are reduced . The indicated distribution is not limiting, since they can also be bolts or screws
( 3) que pasan directamente a través de los tabiques transversales extremos (2. 1) los que penetren en menor profundidad en los tramos (1) de pala, y los pernos o tornillos (3) que pasan por el interior de las columnas (3) that pass directly through the extreme transverse partitions (2. 1) those that penetrate less deeply into the spade sections (1), and the bolts or screws (3) that pass through the interior of the columns
(2.3) los que penetren en mayor profundidad. (2.3) those that penetrate in greater depth.
En esas condiciones, la unión de los tramos (1) de pala puede determinarse con una pieza intermedia (2) única, corno en la realización de la figura 1, determinando esa pieza única tanto los tabiques
Under these conditions, the joining of the blade sections (1) can be determined with a single intermediate piece (2), as in the embodiment of Figure 1, determining that single piece both the partitions
transversales extremos (2. 1) como el tabique transversal medio (2.2). extreme transverse (2.1) as the middle transverse septum (2.2).
No obstante, la unión puede determinarse igualmente con dos piezas intermedias (2) complementarias en sentido longitudinal, como en la realización de la figura 2, determinando cada una de dichas piezas complementarias un tabique transversal extremo (2.1) y en la parte opuesta otro tabique transversal que, junto con el tabique transversal correlativo de la otra pieza complementaria, determinan el tabique transversal medio (2.2) de la unión. However, the joint can also be determined with two intermediate pieces (2) complementary in longitudinal direction, as in the embodiment of Figure 2, each of said complementary parts determining an extreme transverse partition (2.1) and in the opposite part another partition transverse which, together with the correlative transverse septum of the other complementary piece, determine the middle transverse septum (2.2) of the joint.
De igual modo, la unión puede determinarse con piezas intermedias (2) complementarias en sentido transversal, las cuales pueden incluir grupos de cuatro Similarly, the joint can be determined with complementary intermediate pieces (2) in the transverse direction, which can include groups of four
- o más pernos o tornillos (3), como en las realizaciones de las figuras 3 y 4, determinando un efecto semejante para la unión de dos tramos (1) de pala mediante una estructura intermedia compleja en la que se disponen una distribución de pernos o tornillos (3) largos y una distribución de pernos o tornillos ( 3) cortos en cada uno de los sentidos, para la fijación sobre los tramos or more bolts or screws (3), as in the embodiments of Figures 3 and 4, determining a similar effect for the union of two spade sections (1) by a complex intermediate structure in which a bolt distribution is arranged or long screws (3) and a distribution of bolts or short screws (3) in each of the directions, for fixing on the sections
- (1) (one)
- de pala a unir. Shovel to join.
Se prevé también una realización de la pieza o piezas intermedias ( 2) con las aberturas (2. 4) ciegas por una cara de la pieza correspondiente, como en la realización de la figura 6, permitiendo así determinar una unión de superficie continua, por ejemplo en la parte exterior de la pala que se forma con los tramos An embodiment of the part or intermediate parts (2) with the openings (2,4) is also provided on one side of the corresponding part, as in the embodiment of Figure 6, thus allowing to determine a continuous surface joint, by example on the outside of the blade that forms with the sections
(1) unidos, y sólo con cavidades en la cara interior de las piezas intermedias (2) para la introducción y actuación de los pernos o tornillos (3) de la unión, o alternativamente con la superficie continua en la parte
(1) attached, and only with cavities on the inner face of the intermediate pieces (2) for the introduction and operation of the bolts or screws (3) of the joint, or alternatively with the continuous surface on the part
interior de la pala. inside of the shovel.
Como se observa en la figura 7, el sistema de unión mediante piezas intermedias (2) se puede aplicar, entre otras, en la zona media de las paredes conformantes del perfil de los tramos (1) de pala, que convencionalmente es una zona estructural más resistente que el resto del perfil, de forma que la concentración de pernos o tornillos (3) de sujeción que determina este sistema de la invención, permite obtener una unión de los tramos (1) de pala capaz de resistir los principales esfuerzos a los que se ve sometida la pala que se compone con la unión. As can be seen in figure 7, the joining system by means of intermediate pieces (2) can be applied, inter alia, in the middle area of the walls forming the profile of the blade sections (1), which is conventionally a structural zone more resistant than the rest of the profile, so that the concentration of fastening bolts or screws (3) that determines this system of the invention, allows obtaining a connection of the blade sections (1) capable of withstanding the main efforts to the that the shovel that is composed with the union is subjected.
Este sistema de unión puede utilizarse igualmente para la unión de tramos (1) de pala formados con un armazón estructural interior en forma de viga o cajón, This joining system can also be used for joining sections of spade (1) formed with an internal structural framework in the form of a beam or box,
o cualquier otro tipo de estructura, pudiendo establecerse la unión, en este caso, disponiendo las piezas intermedias ( 2) del sistema de unión entre los armazones estructurales interiores de los tramos (1) de pala. or any other type of structure, the union being able to be established, in this case, by arranging the intermediate parts (2) of the joint system between the internal structural frames of the blade sections (1).
En cualquier caso, la zona de la unión entre los tramos (1) de pala, así como el resto del contorno del perfil de la pala que corresponde con dicha zona de la unión, se cubre con un carenado, para dar continuidad a la superficie aerodinámica de la pala entre los tramos In any case, the area of the joint between the spade sections (1), as well as the rest of the contour of the profile of the blade corresponding to said area of the joint, is covered with a fairing, to give continuity to the surface aerodynamics of the blade between the sections
(1) unidos. (1) united.
Claims (6)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201100527A ES2392523B2 (en) | 2011-05-13 | 2011-05-13 | SYSTEM OF UNION OF COMPONENT SECTIONS OF AEROGENERATOR SHOES. |
| US14/117,479 US9574545B2 (en) | 2011-05-13 | 2012-05-03 | Connection system for connecting component sections of wind turbine blades |
| ES12785662.3T ES2604954T3 (en) | 2011-05-13 | 2012-05-03 | Connection system of wind turbine blade component sections |
| JP2014510839A JP6027096B2 (en) | 2011-05-13 | 2012-05-03 | System for combining components of a wind turbine blade |
| BR112013029116-8A BR112013029116B1 (en) | 2011-05-13 | 2012-05-03 | connection system for connecting component sections of wind turbine blades |
| DK12785662.3T DK2708735T3 (en) | 2011-05-13 | 2012-05-03 | A connector system for connecting the component sections of wind turbine blades |
| EP12785662.3A EP2708735B1 (en) | 2011-05-13 | 2012-05-03 | Connection system for connecting component sections of wind turbine blades |
| PCT/ES2012/000118 WO2012156547A1 (en) | 2011-05-13 | 2012-05-03 | System for joining component portions of wind‑turbine blades |
| PL12785662T PL2708735T3 (en) | 2011-05-13 | 2012-05-03 | Connection system for connecting component sections of wind turbine blades |
| CN201280023005.5A CN103765004B (en) | 2011-05-13 | 2012-05-03 | For connecting the connection system of the member segments of wind turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201100527A ES2392523B2 (en) | 2011-05-13 | 2011-05-13 | SYSTEM OF UNION OF COMPONENT SECTIONS OF AEROGENERATOR SHOES. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2392523A1 true ES2392523A1 (en) | 2012-12-11 |
| ES2392523B2 ES2392523B2 (en) | 2013-05-16 |
Family
ID=47176337
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201100527A Expired - Fee Related ES2392523B2 (en) | 2011-05-13 | 2011-05-13 | SYSTEM OF UNION OF COMPONENT SECTIONS OF AEROGENERATOR SHOES. |
| ES12785662.3T Active ES2604954T3 (en) | 2011-05-13 | 2012-05-03 | Connection system of wind turbine blade component sections |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES12785662.3T Active ES2604954T3 (en) | 2011-05-13 | 2012-05-03 | Connection system of wind turbine blade component sections |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9574545B2 (en) |
| EP (1) | EP2708735B1 (en) |
| JP (1) | JP6027096B2 (en) |
| CN (1) | CN103765004B (en) |
| BR (1) | BR112013029116B1 (en) |
| DK (1) | DK2708735T3 (en) |
| ES (2) | ES2392523B2 (en) |
| PL (1) | PL2708735T3 (en) |
| WO (1) | WO2012156547A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140178205A1 (en) * | 2012-12-21 | 2014-06-26 | General Electric Company | Joints for connecting blade segments of a wind turbine rotor blade |
| DK3441561T3 (en) * | 2016-04-04 | 2023-06-12 | Nabrawind Tech Sl | DEVICE FOR JOINING A MODULAR SHEET |
| CN106762462B (en) * | 2016-12-29 | 2018-04-24 | 北京金风科创风电设备有限公司 | Bolt sleeve connecting piece, blade manufacturing method and wind generating set |
| EP4155530B1 (en) | 2021-09-23 | 2024-05-15 | Wobben Properties GmbH | Wind turbine rotor blade |
| DE102022001676A1 (en) | 2022-05-12 | 2023-11-16 | Adc Connection Solutions Gmbh | Device and method for tolerance compensation of prestressed connection arrangements |
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| EP1584817A1 (en) * | 2004-04-07 | 2005-10-12 | Gamesa Eolica, S.A. (Sociedad Unipersonal) | Wind turbine blade |
| US20080240925A1 (en) * | 2007-01-23 | 2008-10-02 | Fuji Jukogyo Kabushiki Kaisha | Separable blade for wind turbine |
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| WO2011006800A1 (en) * | 2009-07-16 | 2011-01-20 | Astrium Sas | Device for assembling sections of wind-turbine blades and method for linking sections of wind-turbine blades |
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| US2133146A (en) * | 1937-08-13 | 1938-10-11 | Gen Electric | Flanged joint |
| JPS57120770U (en) * | 1981-01-19 | 1982-07-27 | ||
| DE3113079C2 (en) | 1981-04-01 | 1985-11-21 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Large aerodynamic wing and process for its manufacture |
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| DE19962989B4 (en) * | 1999-12-24 | 2006-04-13 | Wobben, Aloys, Dipl.-Ing. | Rotor blade for wind turbines |
| FR2821129B1 (en) * | 2001-02-22 | 2003-05-16 | Eads Airbus Sa | DEVICE FOR ASSEMBLING A PANEL AND A STRUCTURE, CAPABLE OF TRANSMITTING IMPORTANT EFFORTS |
| JP2004011616A (en) | 2002-06-11 | 2004-01-15 | Shin Meiwa Ind Co Ltd | Wind mill blade structure for wind power generator |
| DK176176B1 (en) * | 2004-11-24 | 2006-11-27 | Siemens Wind Power As | Method and connector for assembling a blade, preferably wind turbine blade, into sections |
| ES2265760B1 (en) * | 2005-03-31 | 2008-01-16 | GAMESA INNOVATION & TECHNOLOGY, S.L. | SHOVEL FOR WIND GENERATORS. |
| US7517194B2 (en) * | 2006-04-30 | 2009-04-14 | General Electric Company | Rotor blade for a wind turbine |
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-
2012
- 2012-05-03 DK DK12785662.3T patent/DK2708735T3/en active
- 2012-05-03 WO PCT/ES2012/000118 patent/WO2012156547A1/en active Application Filing
- 2012-05-03 CN CN201280023005.5A patent/CN103765004B/en not_active Expired - Fee Related
- 2012-05-03 PL PL12785662T patent/PL2708735T3/en unknown
- 2012-05-03 EP EP12785662.3A patent/EP2708735B1/en active Active
- 2012-05-03 ES ES12785662.3T patent/ES2604954T3/en active Active
- 2012-05-03 JP JP2014510839A patent/JP6027096B2/en not_active Expired - Fee Related
- 2012-05-03 US US14/117,479 patent/US9574545B2/en active Active
- 2012-05-03 BR BR112013029116-8A patent/BR112013029116B1/en not_active IP Right Cessation
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| EP1584817A1 (en) * | 2004-04-07 | 2005-10-12 | Gamesa Eolica, S.A. (Sociedad Unipersonal) | Wind turbine blade |
| US20080240925A1 (en) * | 2007-01-23 | 2008-10-02 | Fuji Jukogyo Kabushiki Kaisha | Separable blade for wind turbine |
| ES2352945A1 (en) * | 2007-11-23 | 2011-02-16 | Fundacion Cener Ciemat | Mooring system for the unión of stretches of particles wind turbines (Machine-translation by Google Translate, not legally binding) |
| US20090226320A1 (en) * | 2008-03-05 | 2009-09-10 | Manuel Torres Martinez | System for connecting wind generator blade sections |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012156547A1 (en) | 2012-11-22 |
| BR112013029116A2 (en) | 2017-02-07 |
| US20140271210A1 (en) | 2014-09-18 |
| EP2708735A1 (en) | 2014-03-19 |
| BR112013029116B1 (en) | 2021-05-18 |
| CN103765004B (en) | 2016-08-24 |
| CN103765004A (en) | 2014-04-30 |
| US9574545B2 (en) | 2017-02-21 |
| JP2014513774A (en) | 2014-06-05 |
| EP2708735A4 (en) | 2014-11-12 |
| JP6027096B2 (en) | 2016-11-16 |
| EP2708735B1 (en) | 2016-08-31 |
| PL2708735T3 (en) | 2017-06-30 |
| DK2708735T3 (en) | 2016-12-19 |
| ES2392523B2 (en) | 2013-05-16 |
| ES2604954T3 (en) | 2017-03-10 |
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